(Wikipedia):
On February 3, 2004, a pair of expletives ("bullshit"--twice,
and "masturbation") spoken by Geronimo was not censored by the
usual delay, resulting in a shakeup of the show. The show was
subsequently suspended for two weeks. When they returned on
February 20, 2004, their first show included four consecutive
hours of music.

they assume they have been delayed by someone above the studio. Then around 3hr35m50s a caller on the phone scan reveals that the two "bullshit"s got out, Buzz confirms this and when they press the caller further a mucky muck hits the delay due to drawing attention to the error.